Evaporation is a cooling process. The water molecules that escape the surface of the bag were those that were fast moving. If you remove the fast moving molecules, the ones left behind are slower and, thereby, colder. The faster you remove them the colder the aggregate becomes. Hanging the bag on the front of a fast moving car is a good way to remove them quickly.
There are two types porous and non porous. You can also seel porous concrete to make it non porous.
Capillary Action draws water and other fluids through small porous channels.
Osmosis ; see related link below .
Sponge is compressible because it is porous.
Bricks have pores because they are made from concrete and concrete is a porous material. Bricks could be made of non porous materials but then they would require a different, and more expensive, medium to hold one to another, where concrete is now used in building to hold bricks together.
Hydrogen diffuses in faster than chlorine into the porous pot. Most of the chlorine remains outside the pot.
YES, drywall is very porous material. If left outside, even covered, in damp conditions it will gain nearly 50 % of it's weight in moisture.
Porous rocks weather more easily for different reasons:Many porous rocks are made from softer materials, thus being more easily weatheredPorous rocks, by definition, tend to have lots of spaces in them where, on a microscopic or even macroscopic level, areas of the rock are not connected on all sides to other rock. As a result, there is less resistance to fracture or other separationsWater can infiltrate porous rocks and dissolve from the inside as well as the outside - even if only very slowlyBecause water can infiltrate porous rocks, they can be fractured from within when the water freezes
There are two types porous and non porous. You can also seel porous concrete to make it non porous.
There are two types porous and non porous. You can also seel porous concrete to make it non porous.
There are two types porous and non porous. You can also seel porous concrete to make it non porous.
An epoxy resin two part glue may be suitable.There may be issues with marble that is outside in a climate where frosts occur. Marble is porous and any moisture absorbed will expand upon freezing, possibly damaging the marble.
Silk is porous -- it absorbs liquids.
Metal is not porous. Many other elements are porous though and when metal combines with them it can potentially become porous.
more porous
Interior paint is more porous and less resistant to the elements than a paint actually devised to use outside. A flat paint finish or a satin paint finish is better outside, a gloss paint finish can also be used but only sparingly, as it reflects light and may highlight more flaws.
The story proved to be quite porous. Lava is a porous rock.